When i put -s USE_SDL2=1
02_getting_an_image_on_the_screen.cpp:5:10: fatal error: 'SDL2/SDL.h' file
not
found
#include <SDL2/SDL.h>
^
1 error generated.
ERROR root: compiler frontend failed to generate LLVM bitcode, halting
Le samedi 8 novembre 2014 11:30:09 UTC+1, Bruce Mitchener a écrit :
>
> Try -s USE_SDL2=1
>
> Cheers,
>
> - Bruce
>
>
> On Sat, Nov 8, 2014 at 5:00 PM, bussiere adrien <[email protected]
> <javascript:>> wrote:
>
>> hello
>> i would like to know if someone have time why my simple sdl2 c++ program
>> don't works as intended in html
>> https://gist.github.com/bussiere/c9828f513ddae1f554e7
>> it only show the second image after six seconds
>> the compiled binary worked as intended
>> thanks
>>
>> Bussiere
>>
>> code below :
>>
>> /*This source code copyrighted by Lazy Foo' Productions (2004-2013)
>> and may not be redistributed without written permission.*/
>> /*
>> i compile it with :
>>
>> /home/bussiere/Lib/emsdk_portable/emscripten/master/./emcc
>> 02_getting_an_image_on_the_screen.cpp -s USE_SDL=2 -s LEGACY_GL_EMULATION=1
>> -o sdl2.html --preload-file hello_world.bmp --preload-file hello_world2.bmp
>>
>> and the html file only who the second image after six econd of blank
>>
>>
>> */
>>
>>
>> //Using SDL and standard IO
>> #include <SDL2/SDL.h>
>> #include <stdio.h>
>> #ifdef __EMSCRIPTEN__
>> #include <emscripten.h>
>> #endif
>> //Screen dimension constants
>> const int SCREEN_WIDTH = 640;
>> const int SCREEN_HEIGHT = 480;
>>
>> //Starts up SDL and creates window
>> bool init();
>>
>> //Loads media
>> bool loadMedia();
>>
>> //Frees media and shuts down SDL
>> void close();
>>
>> //The window we'll be rendering to
>> SDL_Window* gWindow = NULL;
>> //The surface contained by the window
>> SDL_Surface* gScreenSurface = NULL;
>>
>> //The image we will load and show on the screen
>> SDL_Surface* gHelloWorld = NULL;
>>
>> SDL_Surface* gHelloWorld2 = NULL;
>>
>> bool init()
>> {
>> //Initialization flag
>> bool success = true;
>>
>> //Initialize SDL
>> if( SDL_Init( SDL_INIT_VIDEO ) < 0 )
>> {
>> printf( "SDL could not initialize! SDL_Error: %s\n",
>> SDL_GetError() );
>> success = false;
>> }
>> else
>> {
>> //Create window
>> gWindow = SDL_CreateWindow( "SDL Tutorial",
>> SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH,
>> SCREEN_HEIGHT, SDL_WINDOW_SHOWN );
>> if( gWindow == NULL )
>> {
>> printf( "Window could not be created! SDL_Error: %s\n",
>> SDL_GetError() );
>> success = false;
>> }
>> else
>> {
>> //Get window surface
>> gScreenSurface = SDL_GetWindowSurface( gWindow );
>> }
>> }
>>
>> return success;
>> }
>>
>> bool loadMedia()
>> {
>> //Loading success flag
>> bool success = true;
>>
>> //Load splash image
>> gHelloWorld = SDL_LoadBMP( "hello_world.bmp" );
>> if( gHelloWorld == NULL )
>> {
>> printf( "Unable to load image %s! SDL Error: %s\n",
>> "02_getting_an_image_on_the_screen/hello_world.bmp", SDL_GetError() );
>> success = false;
>> }
>>
>> gHelloWorld2 = SDL_LoadBMP("hello_world2.bmp" );
>> if( gHelloWorld2 == NULL )
>> {
>> printf( "Unable to load image %s! SDL Error: %s\n",
>> "02_getting_an_image_on_the_screen/hello_world.bmp", SDL_GetError() );
>> success = false;
>> }
>>
>> return success;
>> }
>>
>> void close()
>> {
>>
>>
>>
>> SDL_FreeSurface( gHelloWorld2 );
>> gHelloWorld2 = NULL;
>>
>> //Destroy window
>> SDL_DestroyWindow( gWindow );
>> gWindow = NULL;
>>
>> //Quit SDL subsystems
>> SDL_Quit();
>> }
>>
>> int main( int argc, char* args[] )
>> {
>> //Start up SDL and create window
>> if( !init() )
>> {
>> printf( "Failed to initialize!\n" );
>> }
>> else
>> {
>> //Load media
>> if( !loadMedia() )
>> {
>> printf( "Failed to load media!\n" );
>> }
>> else
>> {
>> //Apply the image
>> SDL_BlitSurface( gHelloWorld, NULL, gScreenSurface,
>> NULL );
>> //Update the surface
>> SDL_UpdateWindowSurface( gWindow );
>>
>> //Wait two seconds
>> SDL_Delay( 6000 );
>> SDL_FreeSurface( gHelloWorld );
>> gHelloWorld = NULL;
>> //Apply the image
>> SDL_BlitSurface( gHelloWorld2, NULL, gScreenSurface,
>> NULL );
>> //Update the surface
>> SDL_UpdateWindowSurface( gWindow );
>>
>> //Wait two seconds
>> SDL_Delay( 2000 );
>> }
>> }
>>
>> //Free resources and close SDL
>> close();
>>
>> return 0;
>> }
>>
>>
>> --
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